After having been at a race/outdoor concert/hunting/other event where you have not showered for several days and your gear begins to get funky you apply baby powder to the front and back. Then you find a willing partner to eat your ass resulting in a ring resembling a powdered donut on their mouth.

Friend 1: Man that was a great race but I'm ready for a shower.
Friend 2: Hell yeah I found some skank to toss me off and left her with a powdered donut.